code: def test_from_json_and_to_json_with_all_fields(self):
      want_json = json.loads(_FULL_JSON)
      model_card_py = model_card.ModelCard.from_json(want_json)
      got_json = json.loads(model_card_py.to_json())
      self.assertEqual(want_json, got_json)
  
imports: import json
  import os
  import pkgutil
  import jsonschema
  from absl.testing import absltest
  from google.protobuf import text_format
  from model_card_toolkit import model_card
  from model_card_toolkit.proto import model_card_pb2
label_desc: Use image node_id 10 for calling the ModelCardTest obj's underlying member method code with example usage: obj.test_from_json_and_to_json_with_all_fields() without return types